The Amazon is home to one of the most diverse ecosystems in the world but scientists are still uncovering its secrets.
In 2011, the Brazilian government announced the existence of a completely uncontacted tribe living in the Vale do Javari reservation. It was estimated that about 200 tribe members had been living under just four large thatch-roofed buildings.
A farming population, the newly contacted peoples had been living remotely for centuries in one of the deepest parts of the jungle near the Peruvian border.